/*
 * Copyright (C) 2008 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.demo.notepad3;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class NoteEdit extends Activity {

	private NotesDbAdapter mDbHelper;
    private EditText mTitleText;
    private EditText mBodyText;
    private Long mRowId;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        mDbHelper = new NotesDbAdapter(this);
        mDbHelper.open();
        
        setContentView(R.layout.note_edit);
        setTitle(R.string.edit_note);

        mTitleText = (EditText) findViewById(R.id.title);
        mBodyText = (EditText) findViewById(R.id.body);

        Button confirmButton = (Button) findViewById(R.id.confirm);

        mRowId = (savedInstanceState == null) ? null:
        	(Long) savedInstanceState.getSerializable(NotesDbAdapter.KEY_ROWID);
        if (mRowId == null) {
        	Bundle extras = getIntent().getExtras();
        	mRowId = extras != null ? extras.getLong(NotesDbAdapter.KEY_ROWID)
        			: null;
        }
        
        populateFields();
        
        confirmButton.setOnClickListener(new View.OnClickListener() {

            public void onClick(View view) {
            	setResult(RESULT_OK);
            	finish();
            }

        });
    }
    
    private void populateFields() {
    	if (mRowId != null) {
    		Cursor note = mDbHelper.fetchNote(mRowId);
    		startManagingCursor(note);
    		mTitleText.setText(note.getString(
    				note.getColumnIndexOrThrow(NotesDbAdapter.KEY_TITLE)));
    		mBodyText.setText(note.getString(
    				note.getColumnIndexOrThrow(NotesDbAdapter.KEY_BODY)));
    	}
    }
    
    @Override
    protected void onSaveInstanceState(Bundle outState) {
    	super.onSaveInstanceState(outState);
    	saveState();
    	outState.putSerializable(NotesDbAdapter.KEY_ROWID, mRowId);
    }
    
    @Override
    protected void onPause() {
    	super.onPause();
    	saveState();
    }
    
    @Override
    protected void onResume() {
    	super.onResume();
    	populateFields();
    }
    
    private void saveState() {
    	String title = mTitleText.getText().toString();
    	String body = mBodyText.getText().toString();
    	
    	if (mRowId == null) {
    		long id = mDbHelper.createNote(title, body);
    		if (id > 0) {
    			mRowId = id;
    		}
    	} else {
    		mDbHelper.updateNote(mRowId, title, body);
    	}
    }
}
